Home / 19,611.20-29,373.60-11,806.40

Finding the Fourth Proportional to 19,611.20, 29,373.60 and 11,806.40

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Solution

The fourth proportional to 19,611.20, 29,373.60 and 11,806.40 is: 17,683.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,611.20 : 29,373.60 = 11,806.40 : x
  2. Step 2: Convert to fraction form
    19,611.20/29,373.60 = 11,806.40/x
  3. Step 3: Cross multiply
    19,611.20x = 29,373.60 × 11,806.40
  4. Step 4: Simplify right side
    19,611.20x = 346,796,471.04
  5. Step 5: Solve for x
    x = 346,796,471.04/19,611.20
  6. Step 6: Final answer
    x = 17,683.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.